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devicetree: add lm90 thermal_zone sensor support 

This patch updates the LM90's devicetree definition to
include the #thermal-sensor-cells property as well as
the sensor constants in include/dt-bindings/thermal/lm90.h.

Cc: Wei Ni <wni@nvidia.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Christian Lamparter <chunkeey@googlemail.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
This commit is contained in:
Christian Lamparter 2017-02-10 17:12:29 +01:00 committed by Guenter Roeck
parent e531ffc0ff
commit 87d08b11b1
3 changed files with 19 additions and 0 deletions
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6
Documentation/devicetree/bindings/hwmon/lm90.txt
View File

@ -33,6 +33,11 @@ Optional properties:
LM90 "-ALERT" pin output.
See interrupt-controller/interrupts.txt for the format.
- #thermal-sensor-cells: should be set to 1. See thermal/thermal.txt for
details. See <include/dt-bindings/thermal/lm90.h> for the
definition of the local, remote and 2nd remote sensor index
constants.
Example LM90 node:
temp-sensor {
@ -41,4 +46,5 @@ temp-sensor {
vcc-supply = <&palmas_ldo6_reg>;
interrupt-parent = <&gpio>;
interrupts = <TEGRA_GPIO(O, 4) IRQ_TYPE_LEVEL_LOW>;
#thermal-sensor-cells = <1>;
}

1
MAINTAINERS
View File

@ -7527,6 +7527,7 @@ S: Maintained
F: Documentation/hwmon/lm90
F: Documentation/devicetree/bindings/hwmon/lm90.txt
F: drivers/hwmon/lm90.c
F: include/dt-bindings/thermal/lm90.h
LM95234 HARDWARE MONITOR DRIVER
M: Guenter Roeck <linux@roeck-us.net>

12
include/dt-bindings/thermal/lm90.h Normal file
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@ -0,0 +1,12 @@
/*
* This header provides constants for the LM90 thermal bindings.
*/
#ifndef _DT_BINDINGS_THERMAL_LM90_H_
#define _DT_BINDINGS_THERMAL_LM90_H_
#define LM90_LOCAL_TEMPERATURE 0
#define LM90_REMOTE_TEMPERATURE 1
#define LM90_REMOTE2_TEMPERATURE 2
#endif